Dollond, George

Dollond, George

▪ British optician
born Jan. 25, 1774, London, Eng.
died May 13, 1852, London

      British optician who invented a number of precision instruments used in astronomy, geodesy, and navigation.

      Throughout most of his life, he worked for the family firm of mathematical instrument makers, assuming full control after the retirement in 1819 of his uncle Peter Dollond. His micrometer made of rock crystal, announced in 1821, was used by the English astronomer William Rutter Dawes in measuring close double stars. Other inventions followed, including improvements to astronomical and navigation devices. Dollond received the council medal of the Great Exhibition of 1851 for his atmospheric recorder that simultaneously measured and recorded on paper tape temperature, atmospheric pressure, wind speed and direction, evaporation, and electrical phenomena.

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Universalium. 2010.

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  • Dollond , John — (1706–1761) British optician Dollond was born in London, the son of Huguenot refugees. He started life as a silk weaver but later joined his eldest son, Peter, in making optical instruments, and devoted years of experiment to developing an… …   Scientists

  • George — /jawrj/, n. 1. a figure of St. George killing the dragon, esp. one forming part of the insignia of the Order of the Garter. 2. Brit. Slang. any coin bearing the image of St. George. 3. a word formerly used in communications to represent the… …   Universalium

  • Dollond, John and George — born June 10, 1706, London, Eng. died Nov. 30, 1761, London born Jan. 25, 1774, London died May 13, 1852, London British optical scientists. John developed an achromatic (non colour distorting) refracting telescope and a practical heliometer (a… …   Universalium

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